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PCA9634D Datasheet 8-bit Fm I2C-bus LED driver

Manufacturer: NXP Semiconductors

Download the PCA9634D datasheet PDF. This datasheet also includes the PCA9634 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (PCA9634_NXPSemiconductors.pdf) that lists specifications for multiple related part numbers.

General Description

The PCA9634 is an I2C-bus controlled 8-bit LED driver optimized for Red/Green/Blue/Amber (RGBA) color mixing applications.

Each LED output has its own 8-bit resolution (256 steps) fixed frequency Individual PWM controller that operates at 97 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set to a specific brightness value.

An additional 8-bit resolution (256 steps) Group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0 % to 99.6 % that is used to either dim or blink all LEDs with the same value.

Overview

PCA9634 8-bit Fm+ I2C-bus LED driver Rev.

7.1 — 18 December 2017 Product data sheet 1.

Key Features

  • 8 LED drivers. Each output programmable at:.
  • Off.
  • On.
  • Programmable LED brightness.
  • Programmable group dimming/blinking mixed with individual LED brightness.
  • 1 MHz Fast-mode Plus compatible I2C-bus interface with 30 mA high drive capability on SDA output for driving high capacitive buses.
  • 256-step (8-bit) linear programmable brightness per LED output varying from fully off (default) to maximum brightness using a 97 kHz PWM signal.
  • 256-step group brightness.

More Datasheets from NXP Semiconductors

Part Number Description
PCA9634 8-bit Fm I2C-bus LED driver
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PCA9633 4-bit Fm I2C-bus LED driver
PCA9635 16-bit Fm I2C-bus LED driver
PCA9635PW 16-bit Fm I2C-bus LED driver
PCA9617A Level translating Fm I2C-bus repeater
PCA9620 Universal LCD driver
PCA9620H Universal LCD driver
PCA9621 65 mA 8-bit 2-wire bus output port
PCA9622 LED driver